<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <style type="text/css">
        * {
            margin: 0;
            padding: 0;
        }

        html {
            height: 100%;
        }

        body {
            height: 100%;
            background: #ff5500 url(img/backgroud.png) 50% 50% no-repeat;
            background-size: cover;
        }

        .dowebok {
            /*background:url(img/)*/
            background-color: rgba(0, 150, 135, 0.68);
            position: absolute;
            left: 50%;
            top: 50%;
            width: 430px;
            height: 550px;
            margin: -300px 0 0 -215px;
            border: 1px solid #fff;
            border-radius: 20px;
            overflow: hidden;
        }

        .logo {
            width: 150px;
            height: 150px;
            margin: 50px auto 50px;
            background: url(img/校徽.png) no-repeat;
            background-size: 100% 100%;
        }

        .form-item {
            position: relative;
            width: 360px;
            margin: 0 auto;
            padding-bottom: 30px;
        }

        .form-item input {
            width: 288px;
            height: 48px;
            padding-left: 70px;
            border: 1px solid #fff;
            border-radius: 25px;
            font-size: 18px;
            color: #fff;
            background-color: transparent;
            outline: none;
        }

        .form-item button {
            width: 360px;
            height: 50px;
            border: 0;
            border-radius: 25px;
            font-size: 18px;
            color: #1f6f4a;
            outline: none;
            cursor: pointer;
            background-color: #fff;
        }

        #username {
            background: url(img/user.png) 22px 6px no-repeat;
            background-size: 10% 75%;

        }

        #password {
            background: url(img/unlock.png) 22px 6px no-repeat;
            background-size: 10% 75%;
        }

        .tip {
            display: none;
            position: absolute;
            left: 20px;
            top: 52px;
            font-size: 14px;
            color: #f50;
        }

        .reg-bar {
            width: 360px;
            margin: 20px auto 0;
            font-size: 18px;
            overflow: hidden;
        }

        .reg-bar a {
            color: #fff;
            text-decoration: none;
        }

        .reg-bar a:hover {
            text-decoration: underline;
        }

        .reg-bar .reg {
            float: left;
            color: white;
        }

        .reg-bar .forget {
            float: right;
        }

        .dowebok ::-webkit-input-placeholder {
            font-size: 18px;
            line-height: 1.4;
            color: #fff;
        }

        .dowebok :-moz-placeholder {
            font-size: 18px;
            line-height: 1.4;
            color: #fff;
        }

        .dowebok ::-moz-placeholder {
            font-size: 18px;
            line-height: 1.4;
            color: #fff;
        }

        .dowebok :-ms-input-placeholder {
            font-size: 18px;
            line-height: 1.4;
            color: #fff;
        }

        @media screen and (max-width: 500px) {
            * {
                box-sizing: border-box;
            }

            .dowebok {
                position: static;
                width: auto;
                height: auto;
                margin: 0 30px;
                border: 0;
                border-radius: 0;
            }

            .logo {
                margin: 50px auto;
            }

            .form-item {
                width: auto;
            }

            .form-item input, .form-item button, .reg-bar {
                width: 100%;
            }
        }
    </style>
</head>
<body>
<form class="layui-form" action="" method="post">
    <div class="dowebok">
        <div class="logo"></div>
        <div class="form-item">
            <input id="username" type="text" autocomplete="off" placeholder="账号">
        </div>
        <div class="form-item">
            <input id="password" type="password" autocomplete="off" placeholder="密码">
        </div>
        <div class="form-item">
            <button id="submit">登 录</button>
        </div>
        <div class="reg-bar">
            <p class="reg" >管理员</p>
            <input type="checkbox" name="guanliyuan" >
            <a class="forget" href="javascript:">忘记密码</a>
        </div>
    </div>
</form>
</div>
<!--    <script type="text/javascript">-->
<!--        layui.use('form', function () {-->
<!--            var form = layui.form, $ = layui.jquery;-->
<!--        });-->
<!--    </script>-->
</form>
</body>
</html>